Adenoma detection rate in colonoscopy patients at Phang nga Hospital
Keywords:
Adenoma detection rate, Colonoscopy, Phang Nga HospitalAbstract
Background: Colonoscopy is the gold standard for colorectal cancer screening. The quality indicator for colonoscopy is adenoma detection rate (ADR) should be more than 25%. This study reports ADR at Phang nga hospital.
Objectives:
- Adenoma detection rate at Phang nga hospital
- Factors to improve adenoma detection rate
Method: This is retrospective cohort study. Data is collected between 1 December 2022 to 30 September 2023. The colonoscopy was done by same endoscopist. The data such as baseline characteristics of patients, indication for colonoscopy, method of bowel preparation, colonoscopy procedure, tissue histopathology of polyps and adverse events of colonoscopy was collected.
Results: Adenoma detection rate is 62.4%. The factors increase risk of adenoma detection are age OR 1.03 (95%CI, 1.00-1.06) and withdrawal time of colonoscopy OR 1.15 (95%CI, 1.10-1.21). Time to colonoscopy after bowel preparation associate to decrease bowel preparation score (BBPS) (r = -0.17, p = 0.001) and optimum interval time to colonoscopy after bowel preparation is 8 hours. The optimum withdrawal time of colonoscopy is 15 mins for the best adenoma detection rate.
Conclusion: Adenoma detection rate is 62.4%. Risk factors and colonoscopy procedure which can increase adenoma detection rate are age and withdrawal time.
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